[SOLVED] Returning value from function with Task

Thank you. Sorry I think I need more help here.  Here is my code. 
getContent() is in task, and I still don't get it why .getString() is not there. Also not sure where is  "roURLtransferTask " object from on your code.  Sorry I am a noob 🙂

Task.xml

<?xml version="1.0" encoding="utf-8" ?>
 
<component name = "postergridCR" extends = "Task" >
 
<interface>
    <field id = "postergriduri" type = "string" />
    <field id = "postergridcontent" type = "string"/>
    <field id = "content" type = "string" />
</interface>
 
  <script type = "text/brightscript" >


    <![CDATA[
 
sub init()
    m.top.functionName = "getData"
end sub
 
 sub getContent()
      m.readInternet = createObject("roUrlTransfer")
      m.readInternet.observeField("content","contentSet")
      m.readInternet.Url = m.top.postergriduri
end sub

sub contentSet()
      m.top.postergridcontent = m.readInternet.content
end sub

   
   
    ]]>

  </script>
</component>

scenegraph.brs

getwebcontent ("http://example.com")

function getwebcontent(webpage as string)

   m.myObj = createObject("RoSGNode", "postergridCR")
   m.myObj.postergriduri=webpage
   m.myObj.functionName="getcontent"
   m.myObj.control = "RUN"
   return m.myObj.postergridcontent

end function